Past events

February 13th, 2020

In this talk André will present tooling that will help you update large
tables in Postgres with observability on the progress, pause/resume work,
optimization of databases updates throughput and having atomic operations
while not locking all the table but just the rows you want to update.

December 19th, 2019

We use git to keep track of what changes we do to our code, and why we do
them. Some use Chef/Salt/Puppet to keep track of server installations. I
use terraform to apply the same process to manage my AWS accounts, both
personal and professional.

This doesn’t apply only to your standard cloud providers (AWS, GCP,
Azure). I also manage resources on Heroku, Netlify, Fastly, GitHub,
Gitlab, and other tools.

November 14th, 2019

A full-fledged CMS can easily keep records of tasks input by users,
process those tasks into a queue, communicate them to a job factory, and
notify users of the results. We decided we didn’t want to manage a full
CMS just for that, going serverless was the perfect alternative.

The Ember project has many associated websites, the guides, the
deprecation guides, the blog, the API documentation, and the main website
itself. These were built over the years as needed and used a mishmash of
technologies (middleman, embedded Ember, standalone Ember), which made it
hard for both maintainers and new contributors to the project. To take
advantage of the Ember knowledge and skills in the community, we started
moving projects to Ember. In this presentation I will be covering how we
are using JAMstack practices to accomplish this migration.

October 26th, 2019

October 12th, 2019

October 10th, 2019

Elm is a functional language for reliable webapps, with a very strong
emphasis on usability, performance, and robustness.

Elm compiles to JavaScript, and is most well known for:

No runtime errors in practice. No null. No undefined is not a function.

Friendly error messages that help you add features more quickly.

Well-architected code that stays well-architected as your app grows.

Automatically enforced semantic versioning for all Elm packages.

By the end of this talk I hope you will be able to create your own web
application in Elm, understand how it compares with other projects like
React as a tool for creating websites and web apps, but also understand the
core ideas and patterns that make Elm nice to use.

September 12th, 2019

Exciting because we have the tools to solve the challenging problems of our
overpopulated planet. The vision of a connected, peaceful and fair world
feels closer than ever.

Alarming because tech companies provide tons of malware that people greet
without questioning - exchanging their freedom for a fake sense of pleasure
and a fake sense of productivity.

In this talk, I will show that GNU Emacs is the perfect environment for a
focused and free life in a world full of corrupted people and bullshit.

August 8th, 2019

How to get over 300GB of 3D data to the web in real time, by José Ferrão

At UNO Digital we develop solutions for the oil and gas industry. One of
our products is world scale visualization for geospacial data, point clouds
and CAD models. This information is combined with asset management and
monitoring data from our platform to create real time visualizations of
production plants. In this talk we will present the challenges we faced
while trying to deliver over 300GB of 3D data to the web at record time.

June 13th, 2019

The front-end development community has been through a fair share of hype
cycles in the last ten years. In this time, we have seen libraries and
frameworks come and go, sometimes even disappearing completely like
batman.js.

In this talk we will cover how the Ember.js project has managed not only
to keep up with the hype cycles, but to continually push the framework
and the web forward and bring its users along. We will close off the
presentation by talking how this culminates in the concept of editions,
the first of which is Ember Octane.

May 9th, 2019

Build your own email server! First we’ll see how email works both in theory
and in practice, and the stuff you’ll need before building your own server.
We’ll then go through the steps to build one ourselves, hopefully see it in
action, and in the end we’ll discuss a bit whether this is a good idea and
some peculiarities you may find along the way.

March 14th, 2019

Home Automation seems to finally be spreading and
growing, with a lot of new products getting to the
market with affordable prices. Unfortunately, many of
those products use their own proprietary interfaces, so
we end up with isolated products that don’t talk to
each other, and that rely on cloud-based services
(which may be unreliable or slow due to network
conditions).

Fortunately, there are many ways to make some of these
proprietary products work locally, interact with each
other and centralize them, allowing us to control and
manage them from a single service, instead of using a
different app for each device. In this talk, we will
discuss some of the ways to do that using open-source
software like Home Assistant. We will also take a look
at some of the most common technologies used in Home
Automation, and even how to get rid of proprietary
firmware and use open-source ones!

February 21th, 2019

React is one of the most used libraries for web development. However,
because it’s so widely used, the library evolves fast and sometimes we
don’t get the most out of it or we are not familiar with new patterns and
best practices. This talk gives an overview of the current best practices
and caveats to watch out for.

February 16th, 2017

January 19th, 2017

December 21th, 2016

Earlier this year I’ve decided to go for something completely different and
joined a remote working program for a month. There I’ve learned about digital
nomads and how it’s attracting more people each year. This talk will be about
my experiences there, the pros and cons and why you should definitely try it.

November 17th, 2016

Nowadays, we need to ensure that applications are operating 24/7, and
PostgreSQL does not support master-master replication (only through third
parties, with some limitations).

With this in mind, I will talk about migrating an application from
PostgreSQL to RethinkDB. In a technical talk, I will present the issues I
encountered, as well as a performance analysis between both databases.

September 21th, 2016

Sometimes you need to automate desktop capture, but how do you do it? Doesn’t
video encoding have a big impact on performance? Aren’t most desktop capture
applications GUI based?

Doing desktop capture and encoding on windows with minimal performance impact
can certainly be a challenge. Fortunately there are plenty of technologies and
libraries to help us. In this talk we’ll explore what’s out there and how an
open source project helped us deliver a high quality solution.

July 20th, 2016

When talking about programming languages, Swift is the new kid in Apple’s
block. In this session we are introducing Swift from an iOS developer’s
perspective and how it helps build more reliable code compared to its
ancestor Objective-C while crushing some myths along the way.

But, is it mature enough? XCode. Using Swift in production and in building
apps where Obj-c meets Swift.

Now in version 2.2, we will also talk about where we are going and how open
sourcing Swift enables for new interactions with the developer community
such as language improvement and other applications of the language.

May 18th, 2016

Rui Lima led us through a journey through time, going into the history and
evolution of PHP since version 5.3 to 7.0. The concept of
PSRs (PHP Standard Recommendations),
composer (PHP dependency manager), and the
features that version introduced.